Crop protection

UK: Spruce Bark Beetle found in Kent woodland

Woodland managers, land owners, the forest industry and tree nurseries that supply mature conifer specimens are being urged to remain vigilant after the Forestry Commission…

UK-wide consortium to combat xylella

The Parliamentary Under-Secretary of State, Right Honourable Lord Henley, announced funding for a major bacterial plant diseases research programme supported by UK Research and Innovation’s Strategic Priorities Fund. The first phase of this investment initiates a UK-wide consortium to prepare for the…

Critters down under: Root aphids

Most growers have experienced aphid outbreaks in their crops. Often, they are found on the young, new growth of many types of plants.  However, there are also aphids that grow and feed from the root system of several plant species and are classified as root aphids. These aphids are not the same as those that feed from the upper parts…

Plantago asiatica mosaic virus detected in Lilium in the UK

In April 2018, a sample of Oriental hybrid lily (Lilium spp.) with distinctive symptoms was submitted to Fera Science Ltd. for diagnosis from a nursery in southern England by the Plant Health and Seed Inspectorate (PHSI). From the rusty-coloured, necrotic streaking on the leaves it was initially…

US: Novel IRAC mode of action for bioinsecticide

The Insect Resistance Action Committee (IRAC) has approved a novel “nerve and muscular” mode-of-action code for Vestaron's SPEAR bioinsecticide. “As of today, there are only thirteen nerve…

Infected Italian flowers destroyed near Moscow

Insects, considered a quarantine object in the Russian Federation (flower thrips) have been found at the phytosanitary control post in Krasnoznamensk not far from Moscow. The…

Australia: Simulation exercise to strengthen response to Xylella Fastidiosa

A simulation exercise to investigate and improve Australia’s preparedness to respond to a possible detection of Xylella Fastidiosa was conducted by Plant Health Australia in Brisbane recently. Xylella is an invasive bacterial plant pathogen and is one of the world’s most feared pests. Although it is not present in…

"Nutrimite scores high marks in the Netherlands"

In June 2018, Biobest Nederland performed an online survey of 141 Nutrimite users from the Netherlands. Biobest introduced Nutrimite, a food supplement based on Typha pollen, onto the market in 2013. The product stimulates the population development and improves the distribution of predatory mites…

Crop Defender Academy

Greenhouse growers put IPM under the microscope

For many years Crop Defenders has been empowering greenhouse growers through education and training in eco-friendly biological pest control methods. Crop Defender Academy was founded in 2018 to further its non-commercial and unbiased educative role, and launched its first program—IPM Mastery—a 5-day intensive, interactive and practical training…

A positive story with a bee as the leading lady

How do you increase awareness of environmental issues and their consequences for the bee population? By telling a positive story with this exceptional insect as the leading…

US: Tennessee nursery fined for shipping infested hemlocks to NY

Environmental regulators have fined a Tennessee wholesale nursery $2,500 for shipping hemlock tree seedlings infested with a destructive invasive species to customers in…

Canada: Cutting dips approved for use with Kopa

Flowers Canada announced that Kopa Insecticidal Soap (Potassium salts of fatty acids) has been approved for use as a cutting dip. "Many thanks to the Vineland Research and…

2018 Poinsettia wrap up: Whitefly and pesticides

As suspected, it’s turned out to be a heck of year for Poinsettia. Many growers faced Erwinia, others had rooting issues, and all faced significant pressure from Bemisia whitefly from infested cuttings. As the time approaches for the plants to go out the door, this post covers whitefly control successes/failures in 2018,…

Kenya: Proactive management of downey mildew & botrytis

One major headache that flower growers face is the infection of their crops with two important diseases, Downey mildew and Botrytis . These adversely affect the production output and quality of flowers, especially roses. With exporters facing stringent measures on pesticide residues and the market…

US: Growers report good results with new bioinsecticide

In July, Vestaron launched its first product, Spear-T. Spear-T controls all four major greenhouse pests, thrips, whiteflies, aphids AND two-spotted spider mites, as efficiently as synthetic pesticides, with the safety and sustainability of biologicals. Spear-T has a safety profile towards beneficial…

Jordanian delegation visits Koppert

A trade delegation from Jordan visited Koppert Biological Systems at its headquarters in the Netherlands last week. The delegation was led by the Jordan Minister of…

Trans-Tasman alliance to stamp out threats to national biosecurity

Hort Innovation has thrown its support behind a new joint initiative to combat threats to plant biosecurity. Cemented by a Memorandum of Understanding between Australia and New Zealand, the Trans-Tasman collaborative, led by Australia’s Plant Biosecurity Research Initiative (PBRI) and New Zealand’s Better Border Biosecurity…

US (NE): Recommending plants to benefit and attract pollinators

A survey was conducted by the University of Nebraska to unveil the extent to which horticultural employees are knowledgeable about pollinators. Carter Westerhold, Samuel Wortman, Kim Todd, and Douglas Golick sought to determine what plant and management recommendations these employees were passing along…

The skinny on dipping

It’s one thing to use biocontrol to manage pests in a greenhouse but it’s even better not to welcome them into the facility in the first place. Growers are catching onto that idea thanks to Vineland Research and Innovation Centre (Vineland). In a 2018 survey conducted by Vineland, two-thirds of growers who participated said they are using…

US honeybees at risk from Zika pesticides

Recent research suggests that up to 13 percent of US beekeepers are in danger of losing their colonies due to pesticides sprayed to contain the Zika virus. The Zika virus, that can cause severe brain defects in unborn children, is spread by mosquitoes, so the insects are being targeted in the southern US where Zika-carrying…

CAN (NS): Unwanted agricultural pesticides collected at no charge

Sometimes the business of farming results in leftover, unwanted agricultural pesticides or outdated equine/livestock medications. And sometimes disposing of these materials safely is difficult. But for farmers living in or near many Nova Scotian communities, they can take them to special collection…

New sachet improves spider mite control

Following the success of a newly patented packaging concept by Koppert Biological Systems, Spical Ulti-Mite will soon be available in a high-tech foil sachet that ensures…

First report of Wisteria vein mosaic virus on Wisteria sinensis in Iran

Wisteria vein mosaic virus (WVMV) is a member of the Potyvirus genus in the family Potyviridae (Bos, 1970). The virus has been reported in Wisteria spp. in Australasia, China, the United States, and a number of European countries (Clover et al., 2003, 2015; Liang et al., 2004). In August 2017, a plant of…

UK: Tightened measures to protect the country from Xylella

By law, if you import olive trees at any stage of growth, you must notify the Animal and Plant Health Agency (APHA) after 26th November. Olive trees (Olea europaea) will soon be added to the government’s list of tree species included in the plant health statutory notification scheme for imports from the EU. These…

First report of Tetranychus mexicanus in the Netherlands

The National Plant Protection Organization of the Netherlands has reported the first official finding of Tetranychus mexicanus in the Netherlands on 11 October 2018. The origin of the finding is probably Central America. The organism is not listed as a harmful organism in EU directive 2000/29/EC and is…

US (AZ): Tucson Cactus and Succulent Society has saved thousands of plants

Dick Wiedhopf, a 78-year-old resident of Tucson, Arizona, and former university pharmacist, orders 144 pairs of welding gloves at a time. He’s the manufacturer’s biggest customer, but the gloves aren’t all for him—actually, they’re not for any welders. The gloves are for the Tucson Cactus and Succulent Society, which…

A classic tale of whiteflies, doppelgängers and insecticide resistance in poinsettias

The day the Qs took over

As the chilly nights and falling leaves set the stage for All Hallows’ Eve, the scene inside many of our Michigan greenhouses is a strong signal that the December holiday season is just around the corner. In what were seemingly endless drifts of lovely green foliage only a few weeks ago, we now find hints of white, red and pink…

Flox 10 and Iris 15

New generation of red backpack sprayers

Flox, Iris and Senior – when it comes to backpack sprayers, they are classics within the sector. These devices have proven themselves over many decades. Birchmeier has now reworked this range of devices. Although they have repeatedly undergone minor changes in the past, Flox (10 litres) and Iris (15 litres) have now…

How the GreenGuard protocol makes the ornamentals chain more sustainable

The developments that first happened in the vegetable horticulture sector are now also clearly taking place in the ornamentals sector, with an increasing number of market players demanding that their suppliers use as few chemicals as possible on the flowers and plants that they deliver. This shift…

New Zealand: Busy Lizzies at risk of being wiped out by disease

One of New Zealand's most popular flowers is disappearing from shelves and gardens after the discovery of a disease. They're known as Busy Lizzies; Impatiens have long been a gardener's favourite because of their instant colour and ease of growing. But it's now been confirmed a devastating disease called Downy Mildew, prevalent in many…

UK: Positive results for thrip control with biorationals

A report from the AMBER project trial on Western Flower Thrip (WFT) control in protected ornamentals, has shown significant reductions in pest numbers when using biopesticides as part of an integrated strategy. The AHDB-funded trial used a range of biorational insecticides and different tank mixes alongside macrobiologicals, explains…

CAN (ON): How to ID and control Onion thrips

Onion thrips has recently been identified as a pest of floriculture crops in Ontario. Outside of Ontario? Well, this still may apply to you, as a recent study in France also indicated that up to 47% of pest thrips in floriculture greenhouses were Onion thrips. So, this issue could be wide-spread. This post will help you identify…

US: APHIS announces schedule for certifying offshore geranium cutting greenhouses

APHIS will conduct annual certification visits in November and December to offshore facilities that wish to ship geranium (Pelargonium spp.) cuttings to the United States during the 2018-2019 season. During these visits, APHIS will confirm that the offshore facilities meet or exceed the “Minimum…

US: Boxwood blight found in Indiana

The DNR Division of Entomology & Plant Pathology has discovered that a shipment of boxwood plants infected with boxwood blight was shipped to Indiana in May. This is important because boxwood blight ( Calonectria pseudonaviculata ) is a fungal disease that infests members of the popular Buxaceae family, and is…

UK: Beekeepers urge efforts to plant for pollinators

Results of the British Beekeepers Association’s annual Honey Survey show that the honey crop improved by a third this year - to nearly 14 kilos (30lbs) of honey per hive on average across England and Wales. Although a honey crop of 30lbs per colony would have been considered small compared to yields a few decades ago,…

US (WA): Volunteer scientists study flowers to battle climate dread

Most hikers on the Reflection Lakes trail have their cameras pointed at Mount Rainier; Karen Sy, however, had her back to the imposing mountain. Instead, she examined a patch of spindly, tufted plants that look like Dr. Seuss’s truffula trees. In any case, Rainier looked hazy; choking wildfire smoke had…

Coordinated defence against Australia's most threatening plant disease

Wine Australia and Hort Innovation have teamed up through the Plant Biosecurity Research Initiative (PBRI) to safeguard the nation against a devastating bacteria that could cripple the country’s multi-billion dollar wine and horticulture sectors. Xylella fastidiosa is an exotic bacteria that prevents a plant from…

Gowan USA introduces EcoSwing

US: Commercial launch of new botanical fungicide

Gowan USA announces the commercial launch of EcoSwing, an innovative botanical fungicide. EcoSwing is a liquid botanical fungicide based on the extract of Swinglea glutinosa,…

2018 Update

UK: Practical weed control for nursery stock

This AHDB guide is intended to summarise information on weed control in nursery stock in an easy-to-use format. It should provide both a quick guide to formulating weed control programmes as well as providing more in-depth reference data. The 2013 update for the practical weed control for nursery stock explores achieving…

Combating root-knot nematodes in daylilies: Experimental results

While most of the 25,000 species nematodes found in soils are beneficial, there are a few parasitic species that can cause crop losses. Northern root knot nematode, Meloidogyne hapla, is a major pest of some field-grown herbaceous perennials, such as Hemerocallis, daylilies (Fig. 1). The feeding of the…

Canadian Plant Health Council launched

Collaboration between Canadian governments, industry, academia and other partners in plant health is essential to protect our resources from new and emerging risks, drive innovation and ensure that Canadian industry remains competitive and sustainable. Plant health partners in Canada are pleased to announce the establishment…

How France takes action against xylella fastidiosa

Xylella fastidiosa was identified for the first time in Europe in 2013; since then the bacterium has been ranked as a top plant health priority by the European Union and has been a concern in many countries, including France. Using insects as vectors, the bacterium attacks many different plants (over 360 host species…

Australia: Levy projects improving industry protection from pests and disease

Biosecurity is one of the key areas of levy R&D investment for the nursery industry because protecting industry assets from exotic, emerging and endemic pests and diseases is of utmost importance. Currently, there are several nursery biosecurity projects underway. In this blog, we look at recent project updates, resources…

UK: Linuron replacement for ornamental bulb growers

The withdrawal of linuron earlier this year left a large gap in weed control options for many growers, including ornamental bulb growers. As metobromuron has shown to be a reliable alternative to linuron, the AHDB Minor Use team has worked closely with Belchim and CRD (Chemicals Regulation Division) to successfully deliver…

Nematodes in ornamental plant production: Good or bad?

Did you know nematodes are the most abundant animals on earth? Nematodes are microscopic round worms that are extremely common in soils. There are over 25,000 species of nematodes, most of which are considered to be beneficial and feed on bacteria, fungi or insect larvae. The beneficial characteristics…

UK: Defra approves sale of Sequoia for use only in greenhouses

Defra has approved a request from Dow AgroSciences Ltd to sell the pest control product Sequoia in the UK for use only in greenhouses. Sequoia contains the active ingredient…

CAN (ON): Biocontrol big for flower growers

More greenhouse growers are buying into biocontrol thanks largely to the work of a team of Vineland researchers. Ask one of them, though, and she’ll give credit elsewhere for an uptick in more ornamental flower growers using living organisms instead of chemicals to control pests and disease. Rose Buitenhuis, Vineland’s biological control research scientist…

Modified formulation for Macro-Mite

Koppert Biological Systems has developed a new formulation for Macro-Mite, which boosts the vitality of the Macrocheles robustulus predatory mite. Macro-Mite is an effective natural enemy for the control of soil-dwelling pests, like eggs, larvae and pupae of sciarid flies, thrips pupae, and Lyprauta larvae. Modified formulation…

CAN (ON): Which thrips are in your flower crops: When paradigms shift

Up until this point, most of Ontario floriculture growers assumed the only pest thrips they were dealing with was Western flower thrips (besides Echinothrips in a few crops…

US (LA): Field day highlights landscape management, insects, diseases

More than 180 landscapers and others involved in the green industry heard about the management of pest and diseases during the annual Landscape Horticulture Field Day at the LSU AgCenter Hammond Research Station on Oct. 4. The field day is designed to provide the latest research-based information to landscape industry professionals,…

CAN (BC): Hand in your unwanted crop protection products free of charge

Farmers living in or near 10 BC Interior communities will be able to dispose of unwanted agricultural pesticides and outdated livestock medications that have accumulated at their farms at special collection events that are being held at designated locations beginning Monday, October 15. The events have been organized…

October 23, Stratford-upon-Avon

UK: Improving the application of biopesticides to ornamental crops

An AHDB workshop at Bordon Hill Nurseries will identify practical ways for growers to improve the performance of biopesticides when used commercially in crop protection programmes. It is an opportunity for growers of ornamental crops to learn more about a number of important factors that need to be considered when selecting,…

Koppert and CABI collaborate on making more biological controls available

Following earlier collaboration in Kenya in March this year in which CABI and the Koppert Foundation stepped up their efforts to combat pests which threaten the food security and livelihoods of thousands of farmers and their families, the two companies signed a new agreement. Under the agreement, more…

HTA:

"Belgian xylella interception does not affect the UK market currently"

The Belgian Nurseryman and Growers Federation (AVBS) has reported that Xylella fastidiosa was found at a trading company in West Flanders on 26 September, the first time the bacterial pathogen has been identified in Belgium. Although the Belgian interception does not affect the UK market currently, HTA members still…

US (MN): New Emerald Ash Borer and Palmer Amaranth finds

On September 13, 2018, the Minnesota Department of Agriculture (MDA) announced the discovery of a new emerald ash borer (EAB; Agrilus planipennis) infestation in Wright County…

Xylella found in Belgium

In Belgium Xylella fastidiosa is discovered for the first time. According to the AVBS, the association for Flemish floriculture, it was a detection in a batch of olive trees from Spain. These showed suspicious symptoms. Laboratory research showed that the plants were infected. The infected plants have been destroyed. The supplier decided to…

US: BASF’s Inscalis insecticide receives EPA registration

BASF received the U.S. Environmental Protection Agency (EPA) registration for its Inscalis insecticide. The new insecticide controls piercing-sucking insect pests in a variety…

Asperello T34 Biocontrol awarded with Retailers’ Choice Award

Every year, the Biobest North America team meets up in Columbus, Ohio in July for the largest ornamental trade show of the year, Cultivate. Cultivate provides opportunities for the Biobest team to network, to learn from others in the industry and to teach others about biological control agents and the…

The 'tipping point' for whitefly control in poinsettia

If you started out using biological control in your Poinsettia crop this year, you’ve now reached the crucial tipping point for whitefly control decisions. Based on the size of your whitefly population in mid-late September, your populations could end up too high by November to effectively control. Ultimately, this could…


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